var r_image = new Array (4)
r_image[0] = "images/iheader002.jpg";
r_image[1] = "images/iheader003.jpg";
r_image[2] = "images/iheader004.jpg";
r_image[3] = "images/iheader005.jpg";
var rand_int=Math.floor(Math.random()*4);